Roller skate

ABSTRACT

A roller skate is disclosed, in which two wheels are provided, and width can be freely adjusted, and the wheels can be detachably attached to a rear side of a shoe with a band, and the wheels are moved down when used, and the wheels are moved up when not used by allowing the wheels to rotate up and down. So, when not used, the user can walk like the shoes are worn in real. The movement and wearing are easy, and the size can be freely adjusted, and it is very easy to start, run and stop.

TECHNICAL FIELD

The present invention relates to a roller stake which is detachably engaged at shoes, and in particular to a roller skate which consists of two wheels, and width can be freely adjusted, and shoes can be detached when needed irrespective of the sizes of feet, and the wheels are fixed at a lower side when used, and the wheels are fixed at an upper side when not used by allowing the wheels to move up and down.

BACKGROUND ART

A conventional roller skate consists four rollers which slide on a floor and are fixed at a lower surface of a roller skate shoe. In another example of the conventional art, a plurality of rollers is installed in an inline type at a lower surface of a roller shake shoe for enhancing a speed and balance.

According to the above conventional roller skate, a user wears roller skate shoes with straps being tied and runs at high speed with a balanced posture for thereby enjoying the exercise.

In the conventional roller skate, since a plurality of rollers are fixed at a roller skate, when the feet sizes are not correctly fit at the roller skate shoes, it is impossible to wear the shoes. So, a roller skate which well fits with the foot size is needed.

When the foot size is not well fit with the roller skate shoe, it is impossible to wear. When the user wears larger roller sake shoes, the user may have blister in his foot or may feel pain for thereby causing a safety accident. In the case of children whose feet grow every second, it is impossible to use the roller skate for a desired long time period since their growing feet do not fit with the fixed sizes.

In the conventional roller skate have many rollers and a structure for fixing the rollers, so that the volume is too big for thereby causing many inconveniences. When the rollers are worn and need repairs, the maintenance cost increases.

In addition, when the use of the roller skate is finished, the user is needed to change and wear the shoes. The unworn roller skates should be stored. In this case, the volume of the stored roller skates is too big to easily move or store the roller skates.

DISCLOSURE OF THE INVENTION

Accordingly, it is an object of the present invention to overcome the above-described conventional problems.

It is another object of the present invention to provide a roller skate in which two wheels are provided, and width can be freely adjusted, and the wheels can be detachably attached to a rear side of a shoe with a band, and the wheels are moved down when used, and the wheels are moved up when not used by allowing the wheels to rotate up and down. So, when not used, the user can walk like the shoes are worn in real. The movement and wearing are easy, and the size can be freely adjusted, and it is very easy to start, run and stop.

To achieve the above objects, there is provided a roller skate characterized in that a first side plate 10 a having a female engaging part 11 a and a second side plate 10 b having a male engaging part 11 b engaged with the female engaging part 11 a are provided, and the male engaging part 11 b is fixedly inserted into the female engaging part 11 a, and the first and second side plates 10 a and 10 b are engaged, and a footrest 20 is engaged at each female and male engaging part 11 a, 11 b for a braking operation, and circular guide plates 12 a and 12 b are formed at one side of each of the first and second side plates 10 a and 10 b, and the first fixing holes 13 a and 13 b and the second fixing holes 14 a and 14 b are formed at the upper sides of the guide pieces 12 a and 12 b, ands the band engaging holes 15 a and 15 b engaged with the band 30 are formed at the upper sides of the first and second side plates 10 a and 10 b, and the guide parts 42 corresponding to the guide pieces 12 a and 12 b are formed one side of each of the first and second wheel frames 40 a and 40 b, and the receipt grooves 43 are formed at the upper sides of the guide parts 42, and the fixing pins 44 a and 44 b are elastically supported by the spring 45, and the guide parts 42 are inserted into the guide pieces 12 a and 12 b, and the first and second wheel frames 40 a and 40 b are rotatably engaged at the first and second side plates 10 a and 10 b with the help of the rivet 50 a and washer 50 b, and the fixing pins 44 a and 44 b are selectively inserted into the first and second fixing holes 13 a, 13 b and 14 a, 14 b depending on the positions of the first and second wheel frames 40 a and 40 b.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein;

FIG. 1 is a perspective view illustrating an embodiment of the present invention;

FIG. 2 is a backside perspective view illustrating an embodiment of the present invention;

FIG. 3 is a disassembled perspective view illustrating an embodiment of the present invention;

FIG. 4 is a plane view illustrating a construction that a footrest is removed according to the present invention;

FIG. 5 is a side view illustrating a construction when a first side plate is viewed from an inner side according to the present invention;

FIG. 6 is a side cross sectional view illustrating a construction when wheels are moved down according to an embodiment of the present invention;

FIG. 7 is a side cross sectional view illustrating a construction when wheels are moved up according to an embodiment of the present invention; and

FIG. 8 is a view illustrating a use state when it is worn according to an embodiment of the present invention.

MODES FOR CARRYING OUT THE INVENTION

The preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 through 7, the present invention comprises a first side plate 10 a having a female engaging part 11 a, and a second side plate 10 b having a male engaging part 11 b engaged with the female engaging part 11 a.

As the male engaging part 11 b is fixedly engaged with the female engaging part 11 a, the first side plate 10 a and the second side plate 10 b are engaged, and a footrest 20 is inserted into the female and male engaging parts 11 a and 11 b. When a user uses the roller skate, it is needed to rotate down the rear side of the roller skate, the footrest 20 contacts with the ground for thereby obtaining a braking function.

A guide hole 16 is formed at both sides of the female engaging part 11 a, and an adjusting nut 17 is provided between the guide holes 16.

A guide rod 18 inserted into the guide holes 16, respectively, is formed at both sides of the male engaging part 11 b, and an adjusting bolt 19 is rotatably provided between the guide rods 18 and is engaged with the adjusting nut 17.

The guide rod 18 of the male engaging part 11 b is movably engaged in the guide hole 16 of the female engaging part 11 a. The adjusting bolt 19 of the male engaging part 11 b is thread-engaged with the adjusting nut 17 of the female engaging part 11 a, so that it is possible to adjust the intervals between the first and second side plates 10 a and 10 b based on the rotation of the adjusting bolt 19.

Circular guide pieces 12 a and 12 b are formed at each side of the first and second side plates 10 a and 10 b, and first fixing holes 13 a and 13 b and second fixing holes 14 a and 14 b are formed at the upper sides of the guide pieces 12 a and 12 b.

Here, the guide pieces 12 a and 12 b are formed in circular shapes so that the guide parts 42 of the first and second wheels 40 a and 40 b are prevented from being escaped to the outside.

Band engaging holes 15 a and 15 b are formed on the upper sides of the first and second side plates 10 a and 10 b foe engaging with the band 30, so that the band 30 is engaged to the band engaging holes 15 a and 15 b for thereby tightening the user's feet.

According to the present invention, the first and second wheels frames 40 a and 40 b are formed and engaged with the wheels 41 a and 41 b. Guide part 42 corresponding to the guide pieces 12 a and 12 b are formed at each side of the first and second wheels frames 40 a and 40 b.

A receipt groove 43 is formed at an upper side of the guide part 42, so that the fixing pins 44 a and 44 b are elastically inserted along with the spring 45.

The guide parts 42 are inserted into the guide pieces 12 a and 12 b, and the first and second wheel frames 40 a and 40 b are rotatably engaged at the first and second side plates 10 a and 10 b with the rivet 50 a and washer 50 b. The fixing pins 44 a and 44 b are selectively inserted into the first and second fixing holes 13 a, 13 b, 14 a and 14 b depending on the positions of the first and second wheel frames 40 a and 40 b.

The operation and effects of the roller skate according to the present invention will be described.

When a user wears and uses the roller skate according to the present invention, it is needed to adjust the width of the shoe with the width of the roller skate. As the adjusting bolt 19 of the male engaging part 11 b is rotated, the adjusting nut 17 of the female engaging part 11 a thread-engaged with the adjusting bolt 19 is pulled or pushed, so that the female engaging part 11 a fixed with the adjusting nut 17 is pulled or pushed. So, the first side plate 10 a is pulled or pushed, so that the interval between the first and second side plates 10 a and 10 b is adjusted for the width of the shoe.

After the interval between the first and second side plates 10 a and 10 b is adjusted for the width of the shoe, when it is needed to use the roller skate according to the present invention, the fixing pins 44 a and 44 b are pushed toward the receipt groove 43 of the first and second wheel frames 40 a and 40 b, and the first and second wheel frames 40 a and 40 b are rotated downward, and the guide parts 42 a of the first and second wheel frames 40 a and 40 b are rotated along the guide plates 12 a and 12 b of the first and second side plates 10 a and 10 b. When they come to the second fixing holes 14 a and 14 b of the guide pieces 12 a and 12 b, the fixing pins 44 a and 44 b lose the recovery force of the spring 45, and are fixedly inserted into the second fixing holes 14 a and 14 b, and the wheels 41 a and 41 b of the first and second wheel frames 40 a and 40 b are protruded to the lower side of the footrest 20 for thereby enjoying the roller skate.

When the user wishes to stop the roller skate in the course of operation, the fixing pins 44 a and 44 b inserted into the second fixing holes 14 a and 14 b are pushed toward the receipt groove 43 of the first and second wheel frames 40 a and 40 b, and the first and second wheel frames 40 a and 40 b are rotated up, and the guide parts 42 of the first and second wheel frames 40 a and 40 b are rotated along the guide pieces 12 a and 12 b of the first and second side plates 10 a and 10 b. When they come to the positions of the first fixing holes 13 a and 13 b of the guide pieces 12 a and 12 b, the fixing pins 44 a and 44 b are fixedly inserted into the first fixing holes 13 a and 13 b with the help of the recovery force of the spring 45, and the wheels 41 a and 41 b of the first and second wheel frames 40 a and 40 b rise to the upper side of the footrest 20. So, the user can walk like wearing the actual shoes.

The user can enjoy the roller skate based on the up and down movements of the first and second wheel frames 40 a and 40 b and can walk like wearing the actual shoes. When the rear side of the roller skate is rotated down in the course of the roller skate, the foot rest 20 contacts with the ground for thereby obtaining a braking operation for quick stop. So, it is possible to prevent a safety accident.

As described above, since it is possible to freely adjust the width, and it is detachably attached to the rear side of the shoe, and the wheels are designed to rotate. When the roller skate is used, the wheels are moved down, and when it is not used, the wheels are moved up, so that it is possible to obtain a walking procedure like wearing the actual shoes while enjoying the roller skate. The storing and wearing are easy, and it is possible to adjust the sizes depending on the shoes. It is easy to practice start, running and stop. Since the wheels are provided at only the rear side of the shoe, anyone can enjoy the present invention irrespective of sex and age. It is possible to prevent safety accident in the present invention.

As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims. 

1. A roller skate characterized in that a first side plate 10 a having a female engaging part 11 a and a second side plate 10 b having a male engaging part 11 b engaged with the female engaging part 11 a are provided, and the male engaging part 11 b is fixedly inserted into the female engaging part 11 a, and the first and second side plates 10 a and 10 b are engaged, and a footrest 20 is engaged at each female and male engaging part 11 a, 11 b for a braking operation, and circular guide plates 12 a and 12 b are formed at one side of each of the first and second side plates 10 a and 10 b, and the first fixing holes 13 a and 13 b and the second fixing holes 14 a and 14 b are formed at the upper sides of the guide pieces 12 a and 12 b, ands the band engaging holes 15 a and 15 b engaged with the band 30 are formed at the upper sides of the first and second side plates 10 a and 10 b, and the guide parts 42 corresponding to the guide pieces 12 a and 12 b are formed one side of each of the first and second wheel frames 40 a and 40 b, and the receipt grooves 43 are formed at the upper sides of the guide parts 42, and the fixing pins 44 a and 44 b are elastically supported by the spring 45, and the guide parts 42 are inserted into the guide pieces 12 a and 12 b, and the first and second wheel frames 40 a and 40 b are rotatably engaged at the first and second side plates 10 a and 10 b with the help of the rivet 50 a and washer 50 b, and the fixing pins 44 a and 44 b are selectively inserted into the first and second fixing holes 13 a, 13 b and 14 a, 14 b depending on the positions of the first and second wheel frames 40 a and 40 b.
 2. The skate of claim 1, wherein said female engaging part 11 a has a guide hole 16 at both sides, and an adjusting nut 17 is provided between the guide holes 16, and a guide rod 18 inserted into the guide hole 16 is formed at both sides of the male engaging part 11 b, and an adjusting bolt 19 engaged with the adjusting nut 17 is rotatably formed between the guide rods 18, and the guide rod 18 of the male engaging part 11 b is movably inserted into the guide hole 16 of the female engaging part 11 a, and the adjusting bolt 19 of the male engaging part 11 b is engaged with the adjusting nut 17 of the female engaging part 11 b, and the interval between the first and second side plates 10 a and 10 b is adjusted depending on the rotation of the adjusting bolt
 19. 